When you touch a friend after walking across a rug on a dry day, you typically draw a spark of about 2 mm.

a. What is the spacing between the plates?
b. The magnitude of the electric field for which dielectric breakdown occurs in air is about 3 MV/m. Estimate the potential difference between you and your friend before the spark. Answer in units of V.

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

In the first law of thermodynamics, triangle e=q-w, what does q stand for

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_